Home / 21,099.56-29,116.46-11,539.19

Finding the Fourth Proportional to 21,099.56, 29,116.46 and 11,539.19

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Solution

The fourth proportional to 21,099.56, 29,116.46 and 11,539.19 is: 15,923.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.56 : 29,116.46 = 11,539.19 : x
  2. Step 2: Convert to fraction form
    21,099.56/29,116.46 = 11,539.19/x
  3. Step 3: Cross multiply
    21,099.56x = 29,116.46 × 11,539.19
  4. Step 4: Simplify right side
    21,099.56x = 335,980,465.71
  5. Step 5: Solve for x
    x = 335,980,465.71/21,099.56
  6. Step 6: Final answer
    x = 15,923.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.